Computer Simulation Study of Human Locomotion with a Three-Dimensional Entire-Body Neuro-Musculo-Skeletal Model. II. Biomechanical Relationship between Walking Stability and Neuro-Musculo-Skeletal System.

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  • HASE Kazunori
    National Institute of Advanced Industrial Science and Technology
  • OBINATA Goro
    Department of Mechanical Engineering, Graduate School of Engineering, Nagoya University

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  • Computer Simulation Study of Human Locomotion with a Three-Dimensional Entire-Body Neuro-Musculo-Skeletal Model(2)Biomechanical Relationship between Walking Stability and Neuro-Musculo-Skeletal System
  • (II. Biomechanical Relationship between Walking Stability and Neuro-Musculo-Skeletal System)

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It is essential for the biomechanical study of human walking motion to consider not only in vivo mechanical load and energy efficiency but also aspects of motor control such as walking stability. In this study, walking stability was investigated using a three-dimensional entire-body neuro-musculo-skeletal model in the computer simulation. In the computational experiments, imaginary constraints, such as no muscular system, were set in the neuro-musculo-skeletal model to investigate their influence on walking stability. The neuronal parameters were adjusted using numerical search techniques in order to adapt walking patterns to constraints on the neuro-musculo-skeletal system. Simulation results revealed that the model of the normal neuro-musculo-skeletal system yielded a higher stability than the imaginary models. Unstable walking by a model with a time delay in the neuronal system suggested significant unknown mechanisms which stabilized walking patterns that have been neglected in previous studies.

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